Fort Worth weekly gazette. [volume] (Fort Worth, Tex.) 1882-1891, 1887-04-08
POPULAR SCIENCE.
Practical Items of Discovery for Practical
People.

medical authorities that lime-water an
milk are not only food and medicine a
an early period of life, but also at later
when, as in the case of infants, tn
functions of digestion and assimilation
are feeble and easily perverted. II i
found that stomach taxed by gluttony
irri ated by improper food, iIf4med o.
alcohol, enfeebl4d by disease or other
wise unified for its duties-as is showI
! by the various symptoms attendan
upon indigestion, dyspepsia, disrrhei
dysentery and fever-Will resume it:
} work, and do it energeticallY, on an eX-
elusive diet of bread and milk snd lime
water. A goblet of cows milk may have
! four tahlespoonfuls of Underwater added
| TO 1t With good fleet; the Underwater may
ne made by putting few Jumps of I'm.
Stacked lime into stone jar and adding
| water until the lime IS stacked and OF
about the cOnsistepCe Of thick cream
the lime settling and leaving the pure and
clean Underwater on top.
a soft alloy for soldering articles that
will not stand higher temperature, such
g glass or porcelain, may be made from
the following recipe: Copper dust, OBJ
tanned by precipitation from solution Of
the sulpaate By means Of ziGc, is mixed
with q strong sulphur.C acid, specific
gravity l SIS, II Cast-irOn or porcelain
lined mortar. From twenty to
thirJy-siX parts of the dust are
used, according to the desired hardness.
To this Gaze there are stirred in
seventy parts Of mercury. When well
mixed the amalgam is carefully rinsed
with warm water to remove the acid and
then set aside t. cool. Ia ten or twelve
hours it is hard enough to scratch tin,
aud II it is to DE used now it must be
heated 50 hot that when worked over in a
mortar it becomes as soft as wax. In
this form it can be spread out on any
surface, TO which it adhsres with great
tenacity when II gets cold and hard.
ETHEREAL oxygen is the name of a new
compound recently invented by DR. Rich
ardson for Inhalation. He says: 81
place in VOLTS bottle. with an inhaling
moutspiece attached to one neck, two
ounces or more of Ozonic ether, the ethe-
real solution OF peroxide Of hydrogen.
To this | add gradually solution OF per
mang6nate Of pOtSSsa-eiGht grains To
one ounce Of Water-5y the her neck of
the bottle, and Jlen cork that neck. AS
The fluids COmmingie, oxygen gas and
ether vap0r are given off freely, and Can
be Inhaled from the mOuthpiece. The
compound of gas and ivapOr, anesthetic,
anti-spasm0dlc and REPEATING, is appli-
cable to q large class Of cases IF disease,
such as pertuSsiS, asthma and phthisiS.
doubt if | ever Hdded anything more
useful to practical therapeutics than
ETHEREAL oxygen"
a writer in the Chemical News points
out the advantages of employing nickel
dishes END Cruciblcs in Inc laboratory
By experiment he tilds that crucibles Of
pure nickel are quite as serViceable as
those made of platinum, while
only costing one -tenth as much
They do not lose weight when
heated; they stand the action
of alkalies remarkably well, and are par
ticularly useiu! in taking water residues
and milk solids. They may be cleaned
by the use of cold hydrochlOriC acid, either
concentrated or dilute, without loss of
weight; cold sulphuUic acid is likewise
without &Ction; out nitric acid attacks
them, causing rapid loss Of weight.
a writer on the subject of the diet of
Centenarians thnks thats"tWelVe ounces
CT solid food and sixteen ounces of liquid
appear to be the maximum requirements
of age" The solids ought, he thinks, 20
te made up of one third animal food,
chiefly f=sh and twO-thIrds vegetable
nOurishment. He dislikes fruit and fab,
and says that salt and sugar should only
be used sparingly. He also deprecates
the too CopiOus use of milk as we'll as of
drugs, and after adding that industry Of
some kind should be pracliced he grave
ly points out the valuable medicinal prop
critics of port wine. The latter is Ger
tainly more suited to advanced life than
Is almost any other form of stimulant.
The true marine glue is q composition
OF shCllaC and india-rubber, in proper
lions which vary according TO the pur-
pose for which the cement is to be used.
Hhe degree Of suftuesS is regulated by
the proportion of beHZine used for dis>olv-
ing the india-rubber. When ony q small
quantity is needed the following recipe may
De followed: Dissolve one part Of indie
rubber In twelve parts CT beuZine, and to
the solution add twenty parts OF pow
dered shellaC, heating the mixture eau
tiously over a fire. Apply with a brush.
Wooden cells for primary or secondary
battery are made tight and acid proof by
this compound.
the water pr0ofng material recently
discovered by NJ. Janin turns out to be
simply dissolved celluloid. The mixture
10 prepared with pyroxylne, which Is
obtained by disaggregating some eel |
ulose with paper or with rags in a !
mixture Of sulphuriC acid and exotic acid |
This puIpous mass is put in camphorated |
- rr-bip 10 Of 1rS cd
mixture of alcohol and ether. The COM |
brush, but Scuff5 are dipped into bath |,
# the mixture.
Bruises may be taken out of the wood
work Of scientific instruments by Wettlng
With warm water. Then lay on the
place brown paper about five layers
nick and apply hot fat-iron
latil the moisture be evaporated. If |
he bruise be not gone repeat the pro-
less. If the bruise be small, merely soak
t with wsrm wster and apply red hot
poker very near the surface. Keep the
wood wet, and in q few minutes the
)ruise will disappear.
The sewerage of London, amounting to
nearly 200, 900, 900 gallons day, lis carried
~ the great sewers twelve miles to huge
Orsge reservoirs at Barking and
on opposite sides of the
Thames, where it is treated with
me grain per gallon of sodium msDganate
nd few grains of chloride of lime
After precipitation of the solid matter,
he ctficent is discharged into the river at
b5 tide, in clean AID Odorless yet far
rom whclesOme) condition.
Paraffine has higher resistance than
MICA, gutta-percha or shellac. Even
when not subjected to mechanical
fro ina II baoOm.S crooEed +bour5 +bo !